lis = ['hello', 'world', 98, 'hello']
print(lis.index('hello', 1, 4), '\n')
print(lis[-1])
lst1 = [10, 20, 30, 40, 50, 60, 70, 80, 90]
print(lst1[1:6:2])
print(lst1[::-1])
print(10 not in lst1)
lis.append(lst1)
print(lis)
lis.remove(98)
print(lis)
lis.pop(-1)
print(lis)
